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Finding the Fourth Proportional to 551,807.07, 761,508.93 and 310,111.68

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Solution

The fourth proportional to 551,807.07, 761,508.93 and 310,111.68 is: 427,962.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,807.07 : 761,508.93 = 310,111.68 : x
  2. Step 2: Convert to fraction form
    551,807.07/761,508.93 = 310,111.68/x
  3. Step 3: Cross multiply
    551,807.07x = 761,508.93 × 310,111.68
  4. Step 4: Simplify right side
    551,807.07x = 236,152,813,617.30
  5. Step 5: Solve for x
    x = 236,152,813,617.30/551,807.07
  6. Step 6: Final answer
    x = 427,962.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.